作者:J.J. Zalipsky、D.M. Patel、N.H. Reavey-Cantwell
DOI:10.1002/jps.2600670234
日期:1978.2
Degradation of 2,6-dichlorobenzylthiopseudourea hydrochloride was followed in basic medium (pH 7.5) to isolate and characterize all possible degradation products. IR, Raman, and NMR spectroscopy, TLC, and elemental analysis were used to identify the products. Degradation of base-hydrolyzed 2,6-dichlorobenzylthiopseudourea hydrochloride produced 2,6-dichlorobenzylthiol and cyanamide and was followed
然后在碱性介质(pH 7.5)中降解2,6-二氯苄基硫代伪脲盐酸盐,以分离并表征所有可能的降解产物。红外,拉曼和核磁共振光谱,薄层色谱和元素分析被用于鉴定产物。碱水解的2,6-二氯苄基硫代伪脲盐酸盐的降解产生2,6-二氯苄硫醇和氰胺,然后氧化(空气)以产生二(2,6-二氯苄基)二硫化物,二聚化得到氰基胍,并水解产生尿素。在22.5度(pH 7.0和7.5)和37度(pH 7.0)下的水解动力学揭示了相对于底物的拟一级反应。确定了表观一级速率常数和活化能,活化熵和半衰期值。